Improvement in balancing millstones



VAN ORMER & BELL. Balancing Millst ones'.

No. 35,187. Patented May @4862.

UNITED STATES PATENT OFFICE.

ROBERT "AX ()lUllCR AND \VILLL'UI J. BELL, ()ll 1[(ALLISTERVILLE,PENNSYLVANIA.

IMPROVEMENT IN BALANCING lVllLLSTONES.

Specification forming part of Letters Patent No. 35,187. dated May 6,1862.

T0 (LZZ wit/mt it 7111/7 concern:

lie "it known that we, lUmEi-rr VAN Onnnn and WILLIAM J. BELL, both ofAlt-Allisterville, in 'the county of .luniala and State of Pennsylvania,have invented an improved Dcj vice t'or Balancing Millstones; and we dohereby declare the following to be a correct description of the same,refermice being had to the accompanying drawings, in whieh Figure 1 is atop view or plan of our improved balance, and Fig. is a side elevationot' a pair of nlillstones with our balance applied to the runner.

The nature of our improvement consists in providing a more ready mode ofadjusting with accuracy the position of the weight by placing a springon one side of the circle of which it is composed and on the other anadjusting-screw controlled by nuts, as hereil'iat ter more particularldescribed and shown.

The object of balancing the runner is to 'n-esm-ve its parallel ism withthe bed-stone and thus insure regularity and evenness of grinding. Thedillicult v of effecting and maintaining a perlect balance arises fromthe fact i hat the same weight which would balance the stone while atrest does not necessarily effect that object when it is in revolution.Moreover, the wear oi? the stone and of its supports is constantlychanging its balance, which nel cessitates frequent zuljustments. ()urinven- 1 lion facilitates these adjustments.

In the drawings, A marks the runner," and 1 I; the bed-stone. 'lhebalancing-weight we make of? rods of iron R R, united on one side by thespiral spring S and on the other by the screw S, working in the threadedcollars and controlled by the nuts N. The whole forms a circular band,of which one side is heavier than the other, the spiral spring formingthe lightest portion of the circle. This band is placed on the runner inthe position shown in Fig. 2, the spring S being placed on the heavyside of the stone and the screw S on the light side. By turning the nutsN the rods R R can be adjusted in their position on the stone till aperfect balance is effected.

Having thus fully described our invention, what we claim, and desire tosecure by Letters Patent, is-

The combination of the rods R R, spring S, and screw S, in the mannerand for the purpose shown and described.

The above specification signed and witnessed this 15th day of March, A.D. 1862.

ROBERT VAN ORMER. \VM. J. BELL.

\Vitnesses:

A. I. FISHER, J. D. LONGACRE.

